Dirt Tuned Engine

[spykelly420]

It says in the directions that when cleaning or changing brushes, or cleaning commutator, to replace the plastic bearing with a regular steel ball bearing. Now my question is does anyone know the size of the bearing I need to replace it ? The directions fail to mention that detail.

[TA-Mark]

You can measure the existing plastic bush. Bearings are sold by size.

A x B x C, where A is the shaft size, B is the overall diameter, and C is the width of the bearing.

So a 5x11x4 (common bearing used in a Tamiya - 1150) fits on a 5mm shaft, inside an 11mm housing, and it's 4mm wide.

[taliesin]

Yup, what Mark said. Here's an another way of "measuring" that same 1150 bearing he used as an example. Outer diameter = 11 mm, Inner diameter = 5 mm, and thickness = 4 mm. Exactly the same bearing used in both examples, the ever-so-common Tamiya "1150" bearing.

Just measure the plastic bushing using eihter of these methods, and you have your size.